Two Japanese teenagers in 1960s Yokohama learn their school's club house is to be demolished as part of the construction for the 1964 Olympics. They fall in love as they try to save the building, but secrets from the past threaten their romance and the campaign. Animated drama, with the voices of Sarah Bolger, Anton Yelchin and Gillian Anderson.

Yokohama, 1963. Japan is picking itself up from the devastation of World War II and preparing to host the 1964 Olympics—and the mood is one of both optimism and conflict as the young generation struggles to throw off the shackles of a troubled past. Against this backdrop of hope and change, a friendship begins to blossom between high school students Umi and Shun—but a buried secret from their past emerges to cast a shadow on the future and pull them apart.